package com.bitin.adorn.core.interceptor;

import com.alibaba.fastjson.JSON;
import com.bitin.adorn.common.annotation.RepeatSubmit;
import com.bitin.adorn.common.payload.ApiResult;
import com.bitin.adorn.common.servlet.ServletUtils;
import jakarta.servlet.http.HttpServletRequest;
import jakarta.servlet.http.HttpServletResponse;
import org.springframework.web.method.HandlerMethod;
import org.springframework.web.servlet.HandlerInterceptor;

import java.lang.reflect.Method;

/**
 * 防止重复提交拦截器
 *
 * @Author: Mr.Lu
 * @Datetime 2024/8/29 21:59
 */
public abstract class RepeatSubmitInterceptor implements HandlerInterceptor {

    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        if (handler instanceof HandlerMethod) {
            HandlerMethod handlerMethod = (HandlerMethod) handler;
            Method method = handlerMethod.getMethod();
            RepeatSubmit annotation = method.getAnnotation(RepeatSubmit.class);
            if (annotation != null) {
                if (this.isRepeatSubmit(request, annotation)) {
                    ApiResult result = ApiResult.failed(annotation.message());
                    ServletUtils.renderString(response, JSON.toJSONString(result));
                }
            }
            return true;
        }
        return true;
    }

    /**
     * 验证是否重复提交由子类实现具体的防重复提交的规则
     *
     * @param request 请求对象
     * @param annotation 防复注解
     * @return 结果
     */
    public abstract boolean isRepeatSubmit(HttpServletRequest request, RepeatSubmit annotation) throws Exception;
}
